Identify the sentence with the incorrect use of conjunctive verbs. She studied hard for the exam, however, she still failed.

She studied hard for the exam, however, she still failed.

I went to the store, bought milk, but forgot to buy eggs

I wanted to go to the beach, but my parents wouldn't let me.

He is a great singer and he can also dance.

Incorrect use of conjunctive verbs: She studied hard for the exam, however, she still failed.

Explanation: "However" is a conjunctive adverb, not a coordinating conjunction. It needs proper punctuation (a semicolon or period before it). Correct: She studied hard for the exam; however, she still failed.